CN107231062A - The wind cooling refrigerator of cooling fan and the application cooling fan - Google Patents
The wind cooling refrigerator of cooling fan and the application cooling fan Download PDFInfo
- Publication number
- CN107231062A CN107231062A CN201610177153.2A CN201610177153A CN107231062A CN 107231062 A CN107231062 A CN 107231062A CN 201610177153 A CN201610177153 A CN 201610177153A CN 107231062 A CN107231062 A CN 107231062A
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- China
- Prior art keywords
- cooling fan
- rotating shaft
- rotor
- stator
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0633—Details of the bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0693—Details or arrangements of the wiring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Control Of Ac Motors In General (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides the wind cooling refrigerator of a kind of cooling fan and the application cooling fan.The cooling fan includes synchronous motor (10) and impeller (80).Synchronous motor (10) include stator (30) and can relative stator (30) rotate p-m rotor (80), the p-m rotor (80) includes rotating shaft (81) and is sheathed on the PM rotor main body of rotating shaft, the stator (30) includes stator core (31) and is wound in the stator winding (51) powered on stator core by an AC power, when the motor is powered every time, the rotor subject have predetermined starting direction and encloses with 60f/p in steady-state process/the rotating speed constant-speed operation of minute, wherein f is the frequency of the AC power, p is the number of pole-pairs of the p-m rotor.The impeller (100) is connected to the rotating shaft (81) and rotated with being driven by the rotating shaft (81).The cooling fan that the present invention is provided has the advantages that compact conformation, and reduces cost.
Description
Technical field
The present invention relates to a kind of cooling fan, and using the wind cooling refrigerator of the cooling fan.
Background technology
Cooling fan is used as one of critical elements of existing various electrical equipment, its structure, volume size shadow
The structure and performance of whole electrical equipment are rung, and the performance for how taking into account cost and motor then becomes cooling
The major subjects of fan.
The content of the invention
The features and advantages of the present invention are partly stated in the following description, or can be shown from the description
And be clear to, or can be learnt by putting into practice the present invention.
To overcome problem of the prior art, one aspect of the present invention provides a kind of cooling fan, including：Together
Walk motor, including stator and can relative stator rotation p-m rotor, the p-m rotor include rotating shaft
With the PM rotor main body for being sheathed on rotating shaft, the stator includes stator core and is wound in stator magnet
The stator winding powered on core by an AC power, when the motor is powered every time, the rotor
Main body have fixed starting direction and enclosed with 60f/p in steady-state process/the rotating speed constant-speed operation of minute,
Wherein f is the frequency of the AC power, and p is the number of pole-pairs of the p-m rotor；And impeller, institute
Impeller is stated to be connected to the rotating shaft to remain synchronous rotary with the rotating shaft.
As a modification of the present invention scheme, in the rotor subject and the impeller, one of them
To be rigidly connected to synchronize rotation between the rotating shaft, wherein it is another between the rotating shaft
Synchronously turned with being done step-by-step with being relatively rotated and being also associated with delay sychronisation for soft connection
It is dynamic.
As a modification of the present invention scheme, the delay sychronisation includes fixed seat and buffer
Structure, the fixed seat is fixed to the rotating shaft, and described buffer gear one end is connected to the fixed seat,
The other end is connected in the rotor subject and the impeller one of to be slidably connected with the rotating shaft.
As a modification of the present invention scheme, the impeller has an installation portion to be installed to described turn
Axle, is to be slidably matched between the installation portion and the rotating shaft；It is same that the cooling fan also includes delay
Device is walked, the delay sychronisation includes fixed seat and buffer gear, and the fixed seat is fixed to institute
Rotating shaft is stated, the two ends of the buffer gear are connected respectively to the fixed seat and the installation portion, are used for
The rotating speed of the synchronous fixed seat in delay ground and the installation portion.
As a modification of the present invention scheme, the buffer gear is set to the inside and outside of the rotating shaft for set
Footpath all variable elastic components.
As a modification of the present invention scheme, the elastic component is helical spring.
As a modification of the present invention scheme, the delay sychronisation also includes protection sleeve, institute
State protection sleeve and be looped around the elastic component periphery.
As a modification of the present invention scheme, one end and the installation portion of the protection sleeve are fixed,
The other end is slidingly connected to the fixed seat.
As a modification of the present invention scheme, the stator core has square yoke portion, respectively from institute
Two salient poles stretched out respectively inwards on two relative inwalls of square yoke portion are stated, the salient pole, which has, to be used
In installing the winding section of the stator winding, stretched out to circumferential both sides from the winding section radial inner end
The pole shoe of bending；The p-m rotor is contained in the cavity that the pole shoe is surrounded.
It is used as a modification of the present invention scheme, the radial outer end and the square yoke of each salient pole
The inwall in portion, which is provided with concavo-convex buckle structure, to be used to connect the salient pole and the square yoke portion.
It is used as a modification of the present invention scheme, the outside of each permanent-magnet pole of the p-m rotor
Surface is cambered surface, makes the air gap that non-uniform thickness is formed between the permanent-magnet pole and the pole shoe, described
Air gap is symmetrical on the center line of stator salient poles.
There is magnetic resistance as a modification of the present invention scheme, between the pole shoe of described two salient poles larger
Magnetic bridge or notch；The air gap has maximum thickness at the magnetic bridge or notch, along away from institute
The thickness for stating the direction air gap of magnetic bridge or notch is gradually reduced.
As a modification of the present invention scheme, the cooling fan also includes drive circuit, described fixed
Sub- winding and an external ac power source are series between first, second node, and the drive circuit includes
Controllable bidirectional alternating-current switch and the two-way exchange switch in parallel are between first, second node
AC-DC change-over circuit, position sensor and ON-OFF control circuit, AC-DC conversion electricity
Road when the controllable bidirectional alternating-current switch is turned on due to first, second node is short-circuited and without electricity
Stream flows through；The ON-OFF control circuit is configured as the rotor magnetic pole detected according to the position sensor
The polarity information of positional information and the external ac power source, control the controllable bidirectional alternating-current switch with
Predetermined way switches between positive half-wave or the conducting of negative half-wave and cut-off state, the stator winding is existed
The electric motor starting stage drags the rotor only along predetermined startup direction and rotated.
As a modification of the present invention scheme, in addition to insulating frame, positioned at the stator core and institute
State between stator winding, the insulating frame is by being respectively installed to two axial ends of the stator core
Upper insulating frame and lower insulating frame constitute；The upper insulating frame and lower insulating frame are formed in one part,
It is covered each by two axial ends of described two salient poles.
As a modification of the present invention scheme, in the upper insulating frame and lower insulating frame, each is equal
Including：Pole shoe insulation division, for the pole shoe for the salient pole that insulate, including for covering the pole shoe
Axial end the panel for being similar to ring-type and the panel periphery extension for being similar to ring-type from described
The side wall for being used to cover the pole shoe outer surface out；Two coiling insulation divisions, are connected respectively to
The two ends of the pole shoe insulation division；Each coiling insulation division includes being used to cover the salient pole
The panel of the axial surface of winding section, from the panel both sides extend out be used for cover the coiling
The side wall of portion's outer surface.
As a modification of the present invention scheme, the stator also includes shell, the outer casing inner wall tool
The step for having annular to close is used to support the axial end in the square yoke portion, is used for some projections
Support the outer surface in the square yoke portion.
The present invention also provides a kind of wind cooling refrigerator, and it includes cooling fan host cavity, for installing this hair
The cooling fan that bright first aspect is provided.
The present invention, which provides cooling fan, has the advantages that compact conformation, and reduces cost.
By reading specification, these technical schemes will be best understood in those of ordinary skill in the art
Feature and content.
Brief description of the drawings
The present invention, advantages of the present invention and reality are specifically described below with reference to accompanying drawing and with reference to example
Existing mode will be more obvious, and content is only used for explanation of the present invention wherein shown in accompanying drawing, and
Do not constitute to the present invention in all senses on limitation, in the accompanying drawings：
Fig. 1 is the structural representation of the cooling fan of the embodiment of the present invention.
Fig. 2 is the schematic cross-sectional view of the cooling fan of the embodiment of the present invention.
Fig. 3 and Fig. 4 is the blade wheel structure schematic diagram of the cooling fan shown in Fig. 1.
Fig. 5 is the exploded perspective view of the motor of the cooling fan shown in Fig. 1.
Fig. 6 is the insulating frame structure schematic diagram of motor shown in Fig. 5.
Fig. 7 is that motor shown in Fig. 5 removes the floor map after shell, insulating frame and stator winding；
Fig. 8 is the structural representation of the p-m rotor of motor shown in Fig. 5.
Fig. 9 is the drive circuit schematic diagram of the cooling fan of the embodiment of the present invention.
Embodiment
As depicted in figs. 1 and 2, the present invention provides a kind of cooling fan 200, including synchronous motor 10
And the impeller 100 driven by synchronous motor 10.The cooling fan 200 of the present invention is particularly suitable for use in wind
The cooling of cold refrigerator interior condenser tube, wherein, cooling fan 200 is mountable to the host cavity of wind cooling refrigerator
As in refrigerating chamber, the air-flow that impeller 100 is produced directly blows to the condenser pipe in refrigerating chamber.
Synchronous motor 10 is mountable in motor housing, and motor housing is by motor top cover 13 and motor
Bottom 17 is constituted.Top cover 13, bottom 17 are respectively arranged with bearing block 14,18, bearing block 14,18
Being separately installed with bearing 15,19 is used to support rotating shaft 81, enables rotating shaft 81 relative to motor housing
Rotate.
Impeller 100 is slidably matched with rotating shaft 81, also, is also connected between impeller 100 and rotating shaft 81
There is delay sychronisation 110, so as to form soft connection between impeller 100 and rotating shaft 81.Specifically
Ground, impeller 100 includes main part 104 and is connected to some blades 102 of main part 104；Main body
Portion 104 to be mounted directly to rotating shaft 81, and be also connected to delay sychronisation 110, the synchronous dress of delay
Put 110 and be installed to rotating shaft 81.
Referring to figs. 2 to Fig. 4, the center of main part 104 of impeller 100 is installation portion 106, installation portion 106
If mounting hole is inserted for rotating shaft 81, installation portion 106 is slide fit with rotating shaft, i.e. rotating shaft 81 just starts
During rotation, because the volume of impeller 100 is larger, weight is larger, so that with larger rotator inertia,
Now allow there is speed discrepancy between impeller 100 and rotating shaft 81, so that the output for reducing rotating shaft 81 turns
Square requirement.Impeller 100 and the synchronization of rotating shaft 81, mainly pass through the delay with pooling feature
Sychronisation 110 is realized.
The sychronisation 110 that is delayed includes fixed seat 112, internal-and external diameter all variable elastic components 121.Wherein,
The fixed cover of fixed seat 112 is set to rotating shaft 81 so as to as rotating shaft 81 is rotated, it is possible to understand that ground, Gu
Reservation 112 can also be articulated to rotating shaft by the strong connected mode waited of class floweriness, as long as can keep
Both synchronous rotaries.In the present embodiment, elastic component 121 is helical spring, and set is set to rotating shaft 81,
Fix or be movably attached to fixed seat 112 and can be fixed with fixed seat synchronous rotary, the other end in one end
Or be movably attached to impeller installation portion 106 and can be with impeller the synchronous rotary of installation portion 106.
When rotating shaft 81 is since rotation inactive state, fixed seat 112 and the synchronous rotary of rotating shaft 81,
There is speed discrepancy between rotating shaft 81 and impeller 100, that is, the rotating speed of fixed seat 112 is more than impeller 100
Installation portion 106 rotating speed, elastic component 121 by the one end of fixed seat 112 be tightened so as to internal diameter contract
It is small and finally with the synchronous axial system of fixed seat 112；Elastic component 121 finally also can by the one end of impeller 100
Be tightened so as to internal diameter reduce and finally with the synchronous axial system of fixed seat 112.Therefore, elastic component 121 is made
For a kind of buffer gear, little by little by the installation portion 106 of the synchronization of fixed seat 112 to impeller, make
Impeller 100 finally with the synchronous axial system of rotating shaft 81.The pooling feature drop that delay sychronisation 110 is provided
The requirement of the low output torque to motor 10, it is to avoid the feelings of the driving failure of impeller 100 of motor 10
Condition.
During rotating shaft 81 is changed into stopping from rotary state, impeller 100 with larger because turn
Dynamic inertia in the early stage have the rotating speed bigger than rotating shaft 81, now, elastic component 121 lean on impeller end quilt
Unscrew, internal diameter increase, and ultimately result in whole elastic component 121 be loosened, internal diameter increase, the process
In, elastic component 121 also serves as a kind of bolster, on the one hand suppresses the rotating speed of impeller 100, the opposing party
Face makes impeller 100 be finally reached synchronization with rotating shaft 81.
In order to avoid the internal diameter of elastic component 121 increases above the limit, protection sleeve 108 can be set up.Protection
Sleeve 108 is looped around the periphery of elastic component 121, the maximum outside diameter for limiting elastic component 121, so that
Elastic component 121 is avoided to overstep the extreme limit and be damaged during being loosened.In the present embodiment, fixed seat 112
Include disk body 114, boss 116, hub portion 118 from bottom to top；Wherein, the diameter of disk body 114 is slightly larger
In boss 116, and the outer wall of boss is with protecting the micro- close-fitting of inwall of sleeve 108, and is used as elastic component
121 helical spring is then set in hub portion 118.Certainly, elastic component 121 is not limited to use spiral
Spring.It is to be appreciated that ground or lingeringly synchronous fixed seat 112 and 106 liang of installation portion can be buffered
The bolster of the rotating speed of person can be used in replacing elastic component 121.
Fig. 5 and Fig. 6 are refer to, motor 10 includes stator 30 and is pivotally mounted to stator 30
P-m rotor 80.Stator 30 includes stator core 31, is installed to the insulation coil holder of stator core 31
55th, by the coil holder 55 that insulate around the stator winding 51 being located on stator core 31.Wherein, stator magnet
Core 31 includes square yoke portion 33, stretched out respectively inwards from two relative inwalls of square yoke portion 33
One salient pole 36, each salient pole 36 has the winding section 38 for being used to installing stator winding 51, from coiling
The pole shoe 41 for the bending that the radial inner end of portion 38 is stretched out to circumferential both sides.In the present embodiment, salient pole 36
Radial outer end and the inwall in square yoke portion 33 are provided with concavo-convex buckle structure 39；Specifically, the concavo-convex buckle
Structure 39 includes being arranged on the dovetail 37 of the radial outer end of salient pole 36 and is arranged on square yoke portion 33
Inwall the dovetail groove 34 matched with dovetail 37.
The pole shoe 41 of above-mentioned two salient pole 36 surrounds a cavity for being similar to cylinder, p-m rotor
80 are contained in the cavity；In addition, being axially arranged with positioning along motor on the cylindrical cavity inner wall
Groove 46, it is preferable that detent 46 is arranged on the center of each pole shoe 41, is so designed that
Motor by coordinating the elastic component 121 of different rotation directions to realize that rotor twocouese starts, it is certainly, fixed
Position groove 46 can also be arranged on the off-centered position of pole shoe 41, the rotor court being so designed that
The startup ability in one direction is better than the startup ability towards other direction.Referring to Fig. 6, permanent magnetism turns
Son 80 includes the rotor subject that rotating shaft 81, fixed cover are set to rotating shaft 81.Rotor subject includes permanent magnet
The permanent-magnet pole 85 being made, alternatively, rotor subject including fixed cover be set to the rotor magnetic core of rotating shaft 81 with
And it is installed to the permanent-magnet pole 85 of rotor magnetic core.The outer surface of each permanent-magnet pole 85 is cambered surface.Preferably,
Air gap 47 in uneven thickness is formed between permanent-magnet pole 85 and pole shoe 41.In the present embodiment, above-mentioned two
There is the larger notch 43 of magnetic resistance between the pole shoe 41 of individual salient pole 36, the notch 43 can also use magnetic bridge
Replace.Air gap 47 has maximum thickness at notch/magnetic bridge 43, along remote notch/magnetic bridge 43
The thickness of direction air gap 47 is gradually reduced.Preferably, the thickness of air gap 47 is on stator salient poles 36
Center line is symmetrical, so as to form symmetrical non-homogeneous air gap.The setting of non-homogeneous air gap can reduce motor
Cogging torque is so as to improve noise.The setting of detent 46 can cause p-m rotor 80 static
When its pole center relative to stator poles one predetermined angular of off-centring, it is to avoid rotor 80 is parked in extremely
Point position is position of the rotor magnetic pole just to stator poles.
It is fix/to be rigidly connected to thus allow in the present embodiment, between rotating shaft 81 and rotor subject
Synchronous axial system, to slide/being flexible coupling so as to allow to relatively rotate between rotating shaft 81 and impeller 100, and
And, the sychronisation 110 that is delayed is also associated between rotating shaft 81 and impeller 100, is turned for gradually synchronous
The rotating speed of axle 81 and impeller 100.Alternatively, it is between rotating shaft 81 and impeller 100
Be fixedly connected/be rigidly connected, between rotating shaft 81 and rotor subject to be slidably connected/soft connection, and
Delay sychronisation 110 is connected between rotating shaft 81 and rotor subject.
In the present embodiment, permanent-magnet pole 85 in rotor 80 is at least one piece of permanent magnet and formed, stator around
Group 51 when being connected with an AC power rotor 80/rotating speed the constant speed of minute is enclosed with 60f/p in steady-state process
Operation, wherein f is the frequency of the AC power, and p is the number of pole-pairs of the rotor.Stator in Fig. 6
Two magnetic poles are respectively provided with rotor.It should be understood that in more embodiments, stator and rotor also may be used
With with more magnetic poles, such as four, six.
In the present embodiment, the square yoke portion 33 of stator core 31 is rectangle, with two longer sides
Side and two shorter lateral sides.Above-mentioned two salient pole 36 is connected respectively to two shorter lateral sides, in this way,
The length of salient pole 36 can be made longer, so as to install bigger stator winding 51.It is appreciated that
Ground, the yoke portion of stator core 31 is not limited to square, can also be annular, U-shaped etc..
The top cover 13 and bottom 17 of motor housing have essentially identical configuration.It is with bottom 17 hereafter
Example goes description.The cap-like that bottom 17 is square on the whole, with inner chamber 21, the inwall of inner chamber 21
With the annular step 23 closed so that inner chamber 21 has bigger size at the opening of bottom 17,
There is smaller size at the bottom by bottom 17.The annular support stator core 31 of step 23
Square yoke portion 33 axial end.Inwall 27 at the opening by bottom 17 of inner chamber 21 is also set
There are some projections 28, specifically, some projections 28 are arranged on the top of the step 23 of annular,
During assembling, some projections 28 support the outer surface in the square yoke portion 33 of stator core 31, from
And stator core 31 is stably installed at top cover 13, in the shell that bottom 17 is constituted.
It refer in Fig. 6 and Fig. 7, the present embodiment, insulation coil holder 55 is by upper insulating frame 56 and lower insulation
Frame 57 is constituted, and upper insulating frame 56 and lower insulating frame 57 are respectively installed to two axles of stator core 31
To end face, axial surface and corresponding circumferential lateral surface for two salient poles 36 of covering.Upper insulating frame
56 and lower insulating frame 57 structure it is essentially identical, below be described exemplified by following insulating frame 57.
Lower insulating frame 57 include pole shoe insulation division 65, be connected respectively to the two ends of pole shoe insulation division 65 around
Line insulation division 61.Pole shoe 41 of the pole shoe insulation division 65 for the above-mentioned two salient pole 36 that insulate, pole shoe is exhausted
Edge 65 include be used for cover pole shoe 41 axial end the panel 65a for being similar to ring-type and
The side wall 65b, side wall 65b that are used to cover the outer surface of pole shoe 41 extended out from panel 65a peripheries
Outer surface there is fin 69 in the position corresponding to magnetic bridge 43, in addition, side wall 65b inner side table
Face has in the position corresponding to magnetic bridge 43 in groove 67, the present embodiment, and groove 67 is just arranged on convex
On rib 69.Each coiling insulation division 61 is used to insulate to the winding section 38 of salient pole 36, coiling
Insulation division 61 include be used for cover salient pole 36 winding section 38 axial surface panel 61a, from
The side wall 61b for covering the outer surface of winding section 38 that panel 61a both sides extend out.It is each around
There are line insulation division 61 two dividing plates 63 to be used for the position for limiting stator winding 51.Every piece of dividing plate 63
It is all connected to panel 61a and side wall 61b end.Preferably, insulating frame 57 also has some strengthen
Piece 64, reinforced sheet 64 is connected between dividing plate 63 and pole shoe insulation division 65, for example, being connected to dividing plate
Between 63 and panel 65a, or it is connected between dividing plate 63 and side wall 65b.Lower insulating frame 57 is
It is integrally formed part.
With reference to Fig. 6 and Fig. 8, in the present embodiment, p-m rotor 80, which has, is fixedly installed to rotating shaft 81
P-m rotor magnetic core 83, permanent-magnet pole 85 is attached to the outer surface of p-m rotor magnetic core 83.P-m rotor
The outer surface of magnetic core 83 is provided with some axially extending fins 84, and each fin 84 is located at each two
The boundary of permanent magnet 85.In an alternate embodiment of the invention, permanent-magnet pole 85 can also directly pacify
It is attached in rotating shaft 81.
Fig. 9 shows the structured flowchart of the synchronous machine drives circuit of the present invention.In drive circuit 70,
Stator winding 51 and AC power 72 are series between two node A, B.AC power 72 is preferably
Can be mains ac power supply, Current Voltage is such as can be 110 volts, 220 volts, 230 volts.Together
Step motor 10 is monophase machine, and its input power is set as 2W to 5W, e.g. 3W；Electric current is 0.08A
To 0.12A, e.g. 0.09A controllable bidirectionals alternating-current switch 26 and the stator winding 51 connected and
AC power 72 is parallel between two node A, B.Controllable bidirectional alternating-current switch 26 is preferably three ends
Bidirectional thyristor (TRIAC), two anode connects two node A and B respectively.It is appreciated that can
Control two-way exchange switch 26 for example can also be realized by two thyristors of reverse parallel connection, and setting pair
The control circuit answered according to predetermined way to control the two thyristors.AC-DC change-over circuit
76 and switch 26 be parallel between two node A, B.AC-DC change-over circuit 76 by two node A,
Alternating current between B is converted to low-voltage DC.Position sensor 78 can be by AC-DC change-over circuit
The low-voltage DC of 79 outputs is powered, the magnetic pole position of the p-m rotor 80 for detecting synchronous motor 10
Put, and export corresponding signal.In the specific implementation, position sensor 78 can be Hall effect sensing
Device, it is arranged on stator 30 or in stator close to the position of rotor；And position sensor 78 is relative
Stator poles offset an angle, the angle can with rotor when static its pole center relative to stator
The angle of pole off-centring is identical.
ON-OFF control circuit 79 and AC-DC change-over circuit 76, position sensor 78 and controllable bidirectional
Alternating-current switch 26 is connected, and is configured as the p-m rotor position of magnetic pole detected according to position sensor 78
The polarity information of information and the AC power 72 obtained from AC-DC change-over circuit 76, is controlled controllable
Two-way exchange switch 26 switches between conducting and cut-off state in a predefined manner, makes stator winding 51
Rotated in the electric motor starting stage only along predetermined starting direction dragging p-m rotor 80.In the present invention,
When controllable bidirectional alternating-current switch 26 is turned on, two nodes A, B are short-circuited, AC-DC conversion electricity
Road 76 because no current flows through and no longer power consumption, therefore, it is possible to greatly improve efficiency.
The cooling fan structure that the present invention is provided is compact, small volume, effectively controls cost, and it is adopted
Motor speed is constant, stable.In addition, this kind of electric efficiency height, in identical power output
In the case of, volume is smaller, and weight is smaller.
Above by reference to the preferred embodiments of the present invention have been illustrated, those skilled in the art do not depart from this
The scope and spirit of invention, can have a variety of flexible programs to realize the present invention.For example, as one
The feature shown partially or description of individual embodiment can be used for another embodiment to obtain another embodiment.
Preferable feasible embodiment of the invention is these are only, not thereby limits to the interest field of the present invention,
The equivalence changes that all utilization description of the invention and accompanying drawing content are made, are both contained in the right of the present invention
Within the scope of.
Claims (15)
1. a kind of cooling fan, including：
Synchronous motor (10), including stator (30) and can relative stator (30) rotation permanent magnetism turn
Sub (80), the p-m rotor (80) includes rotating shaft (81) and is sheathed on the permanent magnet turn of rotating shaft
Sub- main body, the stator (30) includes stator core (31) and is wound on stator core by a friendship
The stator winding (51) that stream power supply is powered, when the motor is powered every time, the rotor subject has
/ rotating speed the constant-speed operation of minute predetermined starting direction and is enclosed with 60f/p in steady-state process, wherein f is
The frequency of the AC power, p is the number of pole-pairs of the p-m rotor；And
Impeller (100), the impeller (100) is connected to the rotating shaft (81) with by the rotating shaft
(81) drive and rotate.
2. cooling fan according to claim 1, it is characterised in that the rotor subject and institute
State in impeller (100), one of them is to be rigidly connected to synchronize between the rotating shaft (81)
Rotate, wherein another (81) with the rotating shaft between be it is soft connect to be relatively rotated and
Delay sychronisation (110) is also associated with synchronous axial system is done step-by-step.
3. cooling fan according to claim 2, it is characterised in that the delay sychronisation
(110) fixed seat (112) and buffer gear are included, the fixed seat (112) is fixedly attached to institute
Rotating shaft (81) is stated, described buffer gear one end is connected to the fixed seat, and the other end is connected to described
With the soft connectionist of the rotating shaft in rotor subject and the impeller (100).
4. cooling fan according to claim 1, it is characterised in that the impeller (100)
With an installation portion (106) to be installed to the rotating shaft (81), the installation portion (106) and institute
State between rotating shaft (81) to be slidably matched；The cooling fan also includes delay sychronisation (110),
The delay sychronisation (110) includes fixed seat (112) and buffer gear, the fixed seat (112)
Fixed to the rotating shaft (81), the two ends of the buffer gear are connected respectively to the fixed seat (112)
With the installation portion (106), for the synchronous fixed seat (112) in ground and the installation portion of being delayed
(106) rotating speed.
5. cooling fan according to claim 4, it is characterised in that the buffer gear is set
It is set to the internal-and external diameter of the rotating shaft (81) all variable elastic components (121).
6. cooling fan according to claim 5, it is characterised in that the elastic component (121)
For helical spring.
7. cooling fan according to claim 4, it is characterised in that the delay sychronisation
(110) protection sleeve (108) is also included, the protection sleeve is looped around the elastic component (121)
Periphery.
8. cooling fan according to claim 7, it is characterised in that the protection sleeve (108)
One end and the installation portion (106) it is fixed, the other end is slidingly connected to the fixed seat (112).
9. cooling fan according to claim 1, it is characterised in that the stator core (31)
Distinguish with square yoke portion (33), respectively from two relative inwalls of the square yoke portion (33)
Two salient poles (36) inwardly stretched out, the salient pole (36), which has, to be used to install the stator winding
(51) winding section (38), stretched out from the winding section (38) radial inner end to circumferential both sides
The pole shoe (41) of bending；The p-m rotor (80) is contained in the chamber that the pole shoe (41) is surrounded
In vivo.
10. cooling fan according to claim 9, it is characterised in that each salient pole (36)
Radial outer end and the inwall of the square yoke portion (33) be provided with concavo-convex buckle structure (39) and be used to connect
Connect the salient pole (36) and the square yoke portion (33).
11. cooling fan according to claim 9, it is characterised in that the p-m rotor (80)
The outer surface of each permanent-magnet pole (85) be cambered surface, the permanent-magnet pole (85) and the pole shoe (41)
Between formed non-uniform thickness air gap (47), center of the air gap on stator salient poles (36)
Line is symmetrical.
12. cooling fan according to claim 11, it is characterised in that described two salient poles (36)
Pole shoe (43) between there is the larger magnetic bridge of magnetic resistance or notch (43)；The air gap (47) exists
Magnetic bridge or notch (43) place has maximum thickness, along away from the magnetic bridge or notch (43)
Direction described in the thickness of air gap (47) be gradually reduced.
13. cooling fan according to claim 11, it is characterised in that the cooling fan is also
Including drive circuit, the stator winding and an external ac power source be series at first, second node it
Between, the drive circuit includes controllable bidirectional alternating-current switch and the two-way exchange switch in parallel in institute
AC-DC change-over circuit, position sensor and the ON-OFF control circuit between first, second node are stated,
The AC-DC change-over circuit is when the controllable bidirectional alternating-current switch is turned on due to described first,
Two nodes are short-circuited and no current flows through；The ON-OFF control circuit is configured as passing according to the position
The rotor magnetic pole position information of sensor detection and the polarity information of the external ac power source, control are described
Controllable bidirectional alternating-current switch is cut between positive half-wave or the conducting of negative half-wave and cut-off state in a predefined manner
Change, the stator winding is dragged the rotor only along predetermined startup direction in the electric motor starting stage
Rotate.
14. cooling fan according to claim 9, it is characterised in that the stator (30)
Also include shell, there is the outer casing inner wall step (23) of annular closure to be used to support described square
The axial end in yoke portion (33), it is used to some projections to support the outer of the square yoke portion (33)
Side surface.
15. a kind of wind cooling refrigerator, with cooling fan host cavity, it is characterised in that the cooling wind
Fan in host cavity and install just like the cooling fan described in any one in claim 1 to 14.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177153.2A CN107231062A (en) | 2016-03-24 | 2016-03-24 | The wind cooling refrigerator of cooling fan and the application cooling fan |
| EP17157455.1A EP3223391A1 (en) | 2016-03-24 | 2017-02-22 | Cooling fan and air-cooled refrigerator comprising same |
| TW106202904U TWM547602U (en) | 2016-03-24 | 2017-03-02 | Cooling fan and air-cooled refrigerator using the cooling fan |
| US15/453,199 US20170276412A1 (en) | 2016-03-24 | 2017-03-08 | Cooling fan and air-cooled refrigerator comprising same |
| KR1020170033149A KR20170113131A (en) | 2016-03-24 | 2017-03-16 | Cooling fan and air-cooled refrigerator comprising same |
| MX2017003494A MX2017003494A (en) | 2016-03-24 | 2017-03-16 | Cooling fan and air-cooled refrigerator comprising same. |
| BR102017005861-1A BR102017005861A2 (en) | 2016-03-24 | 2017-03-22 | COOLING FAN, AND AIR-COOLED REFRIGERATOR |
| JP2017058541A JP2017198195A (en) | 2016-03-24 | 2017-03-24 | Cooling fan and air-cooled refrigerator comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177153.2A CN107231062A (en) | 2016-03-24 | 2016-03-24 | The wind cooling refrigerator of cooling fan and the application cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107231062A true CN107231062A (en) | 2017-10-03 |
Family
ID=58108545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610177153.2A Withdrawn CN107231062A (en) | 2016-03-24 | 2016-03-24 | The wind cooling refrigerator of cooling fan and the application cooling fan |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20170276412A1 (en) |
| EP (1) | EP3223391A1 (en) |
| JP (1) | JP2017198195A (en) |
| KR (1) | KR20170113131A (en) |
| CN (1) | CN107231062A (en) |
| BR (1) | BR102017005861A2 (en) |
| MX (1) | MX2017003494A (en) |
| TW (1) | TWM547602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431304A (en) * | 2019-01-10 | 2020-07-17 | 广东德昌电机有限公司 | Magnetic core, motor with magnetic core and mower with motor |
| WO2022078200A1 (en) * | 2020-10-13 | 2022-04-21 | 青岛海尔电冰箱有限公司 | Ice discharge electric motor assembly having independent housing with minimized internal volume |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20160930A1 (en) * | 2016-02-22 | 2017-08-22 | Sit Spa | STRUCTURE OF ELECTRIC MOTOR IN PARTICULAR FOR FANS FOR COMBUSTION AIR, OR FOR MIXTURE OF AIR / COMBUSTION GAS, IN GAS BURNERS, STATIC GROUP FOR SUCH ELECTRIC MOTOR STRUCTURE AND ASSEMBLY PROCEDURE FOR SUCH STATIC GROUP |
| CN207454339U (en) * | 2017-08-23 | 2018-06-05 | 博西华电器（江苏）有限公司 | Wind turbine and the refrigerator with the wind turbine |
| KR102030088B1 (en) * | 2018-10-17 | 2019-10-08 | 뉴모텍(주) | Ceiling Fan Motor |
| CN110943575A (en) * | 2019-12-03 | 2020-03-31 | 中信戴卡股份有限公司 | Power supply system mounted on rotating object |
| CN113890251B (en) * | 2021-11-25 | 2022-10-28 | 博固科技(南通)有限公司 | High-power variable speed motor for vertical mill |
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| JPH0937493A (en) * | 1995-07-24 | 1997-02-07 | Hitachi Ltd | Single-phase ac commutator motor |
| JPH1198720A (en) * | 1997-09-19 | 1999-04-09 | Akira Ishizaki | Single-phase permanent magnet motor |
| CN104753239A (en) * | 2013-12-27 | 2015-07-01 | 东部大宇电子株式会社 | Fan motor and fan motor assembly for an apparatus such as a refrigerator |
| CN204992929U (en) * | 2015-08-14 | 2016-01-20 | 德昌电机(深圳)有限公司 | Airflow generation device |
| CN205092677U (en) * | 2015-09-30 | 2016-03-16 | 德昌电机(深圳)有限公司 | Single -Phase permanent -Magnet motor and actuating mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160018434A (en) * | 2014-08-08 | 2016-02-17 | 존슨 일렉트릭 에스.에이. | Drive circuit for a permanent magnet motor |
-
2016
- 2016-03-24 CN CN201610177153.2A patent/CN107231062A/en not_active Withdrawn
-
2017
- 2017-02-22 EP EP17157455.1A patent/EP3223391A1/en not_active Withdrawn
- 2017-03-02 TW TW106202904U patent/TWM547602U/en not_active IP Right Cessation
- 2017-03-08 US US15/453,199 patent/US20170276412A1/en not_active Abandoned
- 2017-03-16 MX MX2017003494A patent/MX2017003494A/en unknown
- 2017-03-16 KR KR1020170033149A patent/KR20170113131A/en unknown
- 2017-03-22 BR BR102017005861-1A patent/BR102017005861A2/en not_active Application Discontinuation
- 2017-03-24 JP JP2017058541A patent/JP2017198195A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0937493A (en) * | 1995-07-24 | 1997-02-07 | Hitachi Ltd | Single-phase ac commutator motor |
| JPH1198720A (en) * | 1997-09-19 | 1999-04-09 | Akira Ishizaki | Single-phase permanent magnet motor |
| CN104753239A (en) * | 2013-12-27 | 2015-07-01 | 东部大宇电子株式会社 | Fan motor and fan motor assembly for an apparatus such as a refrigerator |
| CN204992929U (en) * | 2015-08-14 | 2016-01-20 | 德昌电机(深圳)有限公司 | Airflow generation device |
| CN205092677U (en) * | 2015-09-30 | 2016-03-16 | 德昌电机(深圳)有限公司 | Single -Phase permanent -Magnet motor and actuating mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431304A (en) * | 2019-01-10 | 2020-07-17 | 广东德昌电机有限公司 | Magnetic core, motor with magnetic core and mower with motor |
| WO2022078200A1 (en) * | 2020-10-13 | 2022-04-21 | 青岛海尔电冰箱有限公司 | Ice discharge electric motor assembly having independent housing with minimized internal volume |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM547602U (en) | 2017-08-21 |
| KR20170113131A (en) | 2017-10-12 |
| BR102017005861A2 (en) | 2017-09-26 |
| JP2017198195A (en) | 2017-11-02 |
| EP3223391A1 (en) | 2017-09-27 |
| US20170276412A1 (en) | 2017-09-28 |
| MX2017003494A (en) | 2018-08-15 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171003 |